I had cold and sore throat 4 days back , from first day my spo2 decreased from 99 to 95. So I took rt pcr test and chest st scan . Covid test was negative twice and hrct thorax is nomal. I have observed one thing I have nasal congestion. And when I take breath from my mouth , my spo2 comes normal.
Continue Azeflo nasal spray 7ml sos for nasal allergy for the patient.